Docker ni jukwaa la containerization — kufungasha programu pamoja na tegemezi zake zote katika container inayobebeka ambayo huendeshwa kwa ulinganifu mahali popote. Inasuluhisha tatizo la kawaida la "inafanya kazi kwenye mashine yangu" kwa kufanya mazingira yawe yanayoweza kuzalishwa upya.
Tatizo: mazingira yasiyo na ulinganifu
WITHOUT containers:
→ an app works on the developer's machine but fails in test/production
→ different OS, library versions, configs, missing dependencies → "works on my machine"
→ setting up environments is manual, error-prone, and inconsistent
